iHome
iOS Home Application that manages and controls HomeKit Devices using the HomeKit framework
Enabling Controls with App
Working Features: Turn on/off Outlet and Lightbulb
You need to be enrolled in Apple Developer Program and SandBox the app to control HomeKit Devices. Without Developer enrollment, you are still able to search, delete, and add Homes and Accessories.
More on the way!
Reference
Refer to to AccessoryUI sample project provided by Apple, Inc. in Developer Documentation